Receivables and Allowance for Credit Losses - Credit Quality Indicator (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
2021	$ 2,166
2020	0
2019	31,830
Prior	103,687
Total	137,683	$ 139,317
Senior
Financing Receivable, Credit Quality Indicator [Line Items]
2021	2,166
2020	0
2019	29,004
Prior	77,200
Total	108,370
Subordinated
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0
2020	0
2019	2,826
Prior	24,975
Total	27,801
Unsecured
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0
2020	0
2019	0
Prior	1,512
Total	$ 1,512